Microsoft is updating the supported versions of Outlook for Windows that can connect to Microsoft 365 services.
Starting November 1, 2021, the following versions of Outlook for Windows, as part of Office and Microsoft 365 Apps, will not be able to connect with Office 365 and Microsoft 365 services.
Office and Microsoft 365 Apps
Outlook for Windows Version
15.0.4970.9999 and older
16.0.4599.9999 and older
Microsoft 365 Apps for enterprise (formerly Office 365 ProPlus)
1705 and older
Microsoft 365 Apps for business (formerly Office 365 Business)
How this affects you:
Versions that are newer than minimum version requirements listed above, but are not the currently supported version, may experience connectivity issues.
Supported versions of Outlook for Windows in Office and Microsoft 365 will continue to connect to Microsoft 365 services as expected.
What you need to do to prepare:
We recommend that all users upgrade to the supported versions of Office and Microsoft 365 Apps. If you have a Seneca computer and are unable to update the supported versions, please contact the Service Desk.